Send Email using Yahoo in C# from Windows Store Apps - XAML - UWP¶

In previous section, I introduced how to send email using Gmail account. In this section, I will introduce how to use your Yahoo account to send email in C#.

Sections:

Introduction
[C# - Send email using Yahoo account over direct SSL connection]
[C# - Send Email using Yahoo over Explicit SSL (TLS) on 25 or 587 Port - Example]

Introduction¶

Yahoo SMTP server address is smtp.mail.yahoo.com. It supports both Normal/SSL connection to do user authentication, and you should use your Yahoo email address as the user name for ESMTP authentication. For example: your email is myid@yahoo.com, and then the user name should be myid@yahoo.com.

If you want to use SSL connection with Yahoo SMTP server, you must set the port to 465.

Server	Port	SSL/TLS
smtp.mail.yahoo.com	25, 587	TLS
smtp.mail.yahoo.com	465	SSL

Important

If you got authentication error, you need to enable Allowing less secure apps in your Yahoo account. Or you can generate App Passwords and use this app password instead of your user password.

Although Yahoo supports OAUTH, but it doesn’t provide mail permission, so OAUTH is not a solution for Yahoo mail.

Note

Remarks: All of samples in this section are based on first section: Send email in A simple C# XAML Windows Store App project. To compile and run the following example codes successfully, please click here to learn how to create the test project and add reference of EASendMail to your project.

[C# - Send email using Yahoo account over direct SSL connection]¶

The following example codes demonstrate how to use EASendMail SMTP component to send email using Yahoo account.

Note

To get the full sample projects, please refer to Samples section.

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// Add EASendMail and Tasks Namespace
using System.Threading.Tasks;
using EASendMail;

namespace CSharp_Windows_Store_App
{
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
        }

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
        }

        private async void btnSend_Click(object sender, RoutedEventArgs e)
        {
            btnSend.IsEnabled = false;
            await Send_Email();
            btnSend.IsEnabled = true;
        }

        private async Task Send_Email()
        {
            String Result = "";
            try
            {
                SmtpMail oMail = new SmtpMail("TryIt");
                SmtpClient oSmtp = new SmtpClient();

                // Set your yahoo email address
                oMail.From = new MailAddress("myid@yahoo.com");

                // Add recipient email address, please change it to yours
                oMail.To.Add(new MailAddress("support@emailarchitect.net"));

                // Set email subject and email body text
                oMail.Subject = "test email from C# XAML project";
                oMail.TextBody = "this is a test email sent from Windows Store App using Yahoo.";

                // Yahoo SMTP server
                SmtpServer oServer = new SmtpServer("smtp.mail.yahoo.com");

                // User and password for ESMTP authentication
                oServer.User = "myid@yahoo.com";
                oServer.Password = "testpassword";

                // Because yahoo deploys SMTP server on 465 port with direct SSL connection.
                // So we should change the port to 465.
                oServer.Port = 465;

                // detect SSL type automatically
                oServer.ConnectType = SmtpConnectType.ConnectSSLAuto;

                await oSmtp.SendMailAsync(oServer, oMail);
                Result = "Email was sent successfully!";
            }
            catch (Exception ep)
            {
                Result = String.Format("Failed to send email with the following error: {0}", ep.Message);
            }

            // Display Result by Diaglog box
            Windows.UI.Popups.MessageDialog dlg = new
                Windows.UI.Popups.MessageDialog(Result);

            await dlg.ShowAsync();
        }
    }
}

[C# - Send Email using Yahoo over Explicit SSL (TLS) on 25 or 587 Port - Example]¶

The following example codes demonstrate how to send email using Yahoo account in C# over TLS 587 port. To get full sample projects, please refer to Samples section.

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// Add EASendMail and Tasks Namespace
using System.Threading.Tasks;
using EASendMail;

namespace CSharp_Windows_Store_App
{
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
        }

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
        }

        private async void btnSend_Click(object sender, RoutedEventArgs e)
        {
            btnSend.IsEnabled = false;
            await Send_Email();
            btnSend.IsEnabled = true;
        }

        private async Task Send_Email()
        {
            String Result = "";
            try
            {
                SmtpMail oMail = new SmtpMail("TryIt");
                SmtpClient oSmtp = new SmtpClient();

                // Set your yahoo email address
                oMail.From = new MailAddress("myid@yahoo.com");

                // Add recipient email address, please change it to yours
                oMail.To.Add(new MailAddress("support@emailarchitect.net"));

                // Set email subject and email body text
                oMail.Subject = "test email from C# XAML project";
                oMail.TextBody = "this is a test email sent from Windows Store App using Yahoo.";

                // Yahoo SMTP server
                SmtpServer oServer = new SmtpServer("smtp.mail.yahoo.com");

                // User and password for ESMTP authentication
                oServer.User = "myid@yahoo.com";
                oServer.Password = "testpassword";

                // set 587 port
                oServer.Port = 587;

                // detect SSL type automatically
                oServer.ConnectType = SmtpConnectType.ConnectSSLAuto;

                await oSmtp.SendMailAsync(oServer, oMail);
                Result = "Email was sent successfully!";
            }
            catch (Exception ep)
            {
                Result = String.Format("Failed to send email with the following error: {0}", ep.Message);
            }

            // Display Result by Diaglog box
            Windows.UI.Popups.MessageDialog dlg = new
                Windows.UI.Popups.MessageDialog(Result);

            await dlg.ShowAsync();
        }
    }
}

Next Section

At next section I will introduce how to send email using Hotmail/MSN Live/Office 365 account.

Tutorial Index

Send Email using Yahoo in C# from Windows Store Apps - XAML - UWP¶

Introduction¶

[C# - Send email using Yahoo account over direct SSL connection]¶

[C# - Send Email using Yahoo over Explicit SSL (TLS) on 25 or 587 Port - Example]¶

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